232 COMPOSITE FAMILY 



Pluchea foetida. Marsh fleabane. Heads small, purplish, 

 in terminal clusters. Pappus hairlike bristles. Plants 1-3 

 ft. tall, odorous. Leaves oblong, sessile, toothed, 1-4 in. long. 

 Low grounds. Blooming from spring to fall. Pla. to N. J. 

 and Texas. 



Pluchea purpurascens. Heads similar to above species. 

 Plants 1-5 ft. tall. Leaves short-stalked. Pla. to Ga. and 

 Texas. 



Pterocaulon undulatum (Chaenolohus). Rabbit-tobacco. 

 Blackroot. Heads whitish, tiny, crowded in thick spikes 1-4 

 in. long. Pappus hairlike bristles. Stems 1-2 ft. tall, 

 winged. Leaves oblong or narrow, 2-5 in, long, green above, 

 white-woolly beneath. Pinelands. Blooming all the year. 

 Fla. to N. C. and Miss. 



Melanthera — several species. Heads whitish, stalked, 

 about ^2 in- across. Anthers black. Pappus 2 or more 

 fragile awns. Stems 1-6 ft. tall, branched, rough. ^ Leaves 

 rough, usually broadest at base, often 3-lobed, 1-6 in. long. 

 Sandy soil. Fla. 



Helianthus Radula. Rayless sunflower. Heads purplish 

 brown, 1 in. or less across, solitary, terminating nearly leaf- 

 less stem 1-3 ft. tall. Pappus 2 fragile awns. Basal leaves 

 broad, hairy, 2-5 in. long. Low pinelands. Blooming in sum- 

 mer and fall. Fla. to Ga. and Ala. 



Polypteris integrifolia. Heads white, pink, or purplish, 

 stalked, in terminal inflorescence. Involucre bracts broad, 

 white or white-margined. Pappus 8-12 narrow scales. Plants 

 1-4 ft. tall. Leaves alternate, narrow, 1-3 in. long. Dry soil. 

 Blooming from spring to fall. Fla. and Ga. 



Palafoxia Feayi. Flowers whitish or pale purple, spread- 

 ing. Heads in loose terminal clusters. Involucre bracts 

 narrow, green. Pappus 8-12 short scales. Plants shrubby, 

 2-10 ft. tall. Leaves oblong or broadest near base, 1-3 in. 

 long. Sandy soil. Blooming in fall and winter. Fla. 

 peninsula. 



Erechtites hieracifolia. Fireweed. Heads greenish, cylin- 

 drical, in terminal inflorescence. Pappus silky hairs. Plants 

 1-6 ft. tall. Leaves thin, 2-8 in. long, toothed. Waste places 

 and damp soil. Blooming all the year. Fla. to La. and 

 northward. 



